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United States Patent | 5,050,619 |
Ferguson | September 24, 1991 |
A male contraceptive device has two sheaths (1, 4) which are relatively slidable for cleaning and assembly but keep stationary during use. Sheath (4) has a air hole (6) and the arrangement is such that air is allowed to and from the inner sheath via the air hole and passages between the sheaths. Air flow is partially restricted so that partial collapse of the sheaths occurs on withdrawal.
Inventors: | Ferguson; Andrew R. B. (11 Harcourt Close, Henley-on-Thames, Oxon, RG9 1UZ, GB2) |
Appl. No.: | 457698 |
Filed: | December 22, 1989 |
PCT Filed: | April 20, 1989 |
PCT NO: | PCT/GB89/00423 |
371 Date: | December 22, 1989 |
102(e) Date: | December 22, 1989 |
PCT PUB.NO.: | WO89/10105 |
PCT PUB. Date: | November 2, 1989 |
Apr 20, 1988[GB] | 8809337 |
Current U.S. Class: | 128/844; 128/842; 604/347 |
Intern'l Class: | A61F 013/00 |
Field of Search: | 128/842,844 604/347,349,352 |
2586674 | Feb., 1952 | Lonne | 128/844. |
4009717 | Mar., 1977 | Allen | 604/347. |
4961734 | Oct., 1990 | Kassman | 128/844. |
Foreign Patent Documents | |||
2349361 | Apr., 1975 | DE | 604/347. |
2460812 | Jul., 1976 | DE | 604/347. |